You are correct as to them not being hostile to everyone. They are usually only hostile to people that raise a critical voice. Whether this is about release dates, opening up the process or even release tags of RPM packages (which is the thread I was referring to).

And it is very hard, to impossible, to raise a critical voice without one of the core developers taking it personally, instead of rationally. There seems to be a state of us against them.

BTW there are no "guys at my side" and there is no conspiracy. I think that's where the problem lies. But hey, I left centos-devel mailing list and am about to leave the centos mailing list too, so problem solved !